Remove job server dependency searchengine (#18908)

* Remove job server dependency searchengine

The job server field was not being used. We remove it
as part of a cleanup of server initialization refactor.

https://community-daily.mattermost.com/boards/workspace/zyoahc9uapdn3xdptac6jb69ic/285b80a3-257d-41f6-8cf4-ed80ca9d92e5/495cdb4d-c13a-4992-8eb9-80cfee2819a4?c=8a171d5e-4398-4bc9-8fbf-8b9b14f37069

```release-note
NONE
```

* Fix missing field

```release-note
NONE
```

testlib/helper.go

@@ -102,7 +102,7 @@ func (h *MainHelper) setupStore(withReadReplica bool) {
 	config := &model.Config{}
 	config.SetDefaults()
 
-	h.SearchEngine = searchengine.NewBroker(config, nil)
+	h.SearchEngine = searchengine.NewBroker(config)
 	h.ClusterInterface = &FakeClusterInterface{}
 	h.SQLStore = sqlstore.New(*h.Settings, nil)
 	h.Store = searchlayer.NewSearchLayer(&TestStore{